Since its release in 1981, there have been huge library of Call of Cthulhu scenarios and supplements. We don't want all these great classics to go away and are working to bring back as many as we can for you to enjoy. Many are currently available only in PDF format, but we are working on supporting POD too.

Can we use them with 7th Edition?

Absolutely! The 7th Edition Keeper Rulebook has a very short section dedicated to this as almost every conversion can be made on the fly. If you are new to the game I would start with the 7th Edition scenarios, but when your players come clamoring back for more feel free to go into the Classics as well. We have a standalone conversion guide you can get here.

Eldritch Explorations in the Ancient Kingdom
WELCOME TO THE SECRETSOF MOROCCO! This book provides players with a civil, geographical, cultural, political, and Mythos tour of Morocco during the 1920s and 1930s. Morocco will seem like another world, with its cultural differences and its customs being foreign to many Westerners of the 1920s.
The country is vast, and not every city can... [click here for more]

The City that Never Sleeps
During the day ships, barges, tugs, and pleasure boats ply New York’s bay and rivers, dashing beneath bridges and disgorging thousands of people upon the city's shores. Each brings hope and dreams of a new life. At night the city blazes with myriad lights, diamonds dazzling in buildings that scrape the sky. Music, food, dance, dark rituals, and clandestine... [click here for more]

Horror Roleplaying in the Worlds of H. P. Lovecraft
The Great Old Ones ruled the earth aeons before the rise of humankind. Originally they came from the gulfs of space and were cast down by even greater beings. Remains of their cyclopean cities and forbidden knowledge can still be found on remote islands in the Pacific, buried amid the shifting sands of vast deserts, and in the frigid recesses... [click here for more]

Want to covert an older Call of Cthulhu product for 7th Edition? Don't have time to fiddle through your copy of the Keepers Rulebook?
Get all the information you need from a single free PDF.
These pages are taken from the Call of Cthulhu 7th Edition Keepers Rulebook. You can get the full book here. ... [click here for more]

GUIDELINES FOR PLAYING CALL OF CTHULHU IN SEVEN DIFFERENT ERAS
On release back in 1981, the initial setting of Call of Cthulhu focused upon the “classic” 1920s-era of the early twentieth century — the time of H.P. Lovecraft. It did not take long for players to realize the potential of the game —that it could adapt easily to other time periods.
Over the last... [click here for more]

Call of Cthulhu Roleplaying in the Year 1000 A.D.
The Dark Ages world is filled with life, death, and the pain of old age. Vengeful hordes wash across the world. Petty warlords fight among themselves like ravenous dogs. Disease runs rampant. Illiterate city-folk and simple farmers dread that which lurks in the dark. And in the greatest abbeys, a few know of forbidden books that speak of blasphemy... [click here for more]

An Essential Guide for Players
When faced with the horrors of the Cthulhu Mythos, investigators need all the help that they can get. This essential player's aid for Call of Cthulhu provides it.
The 1920s Investigator's Companionis split into four sections. "The Roaring Twenties" details life in the 1920s, from a general historical overview to listing of favorite songs, books,... [click here for more]

The ideas presented in this book attempt to be both mundane and fantastic at the same time— plausability is the key.
It is in the details that the horror lies, because it is in the credibility of the details that the fantastic can rise and stand.
This, then, is a book of details, most mundane, some fantastic. They have but one purpose—that of bringing Lovecraft's horror home to us... [click here for more]

A Resection of Time is a short campaign for Call of Cthulhu set in the modern day. It begins in early April, in San Francisco, and ends a little later in the steamy jungles of Belize, in Central America. Before plunging into the dark heart of the ancient Mayan world, the investigators also travel to Los Angeles and shadowy Arkham.
The details of Mayan architecture, culture, epigraphy,... [click here for more]

Revisiting the Legend-Haunted City
ARKHAM NOW updates to modern times the famous and fabled city of Arkham for the Call of Cthulhu roleplaying game.
Most residents believe there is only one horror lurking in this legendary haunted town — the urban sprawl slowly eroding Arkham's old New England beauty. Rushing by neon signs and mega-marts to obtain even more material possessions,... [click here for more]

The batle against the horrors of the myihos often leaves an investigator dead or insane. In either case, a paper trail has formed, one that can lead new, ignorant investigators into realms of unspeakable evil.
This supplement contains a large number of useful forms for use in a Call of Cthulhu® game. Death certificates, insanity certificates, patient records, and even fingerprint forms... [click here for more]

MYTHOS HORROR IN THE 1950sNEVER BEFORE had the world faced a threat as potentially devastating as the A-bomb -- and the even more lethal H-bomb that followed. Educational films showed how to "survive" a nuclear blast by crawling under a desk, as if a few inches of wood made any difference. In movie theaters, classic monsters of the '30s and '40s were replaced by... [click here for more]

An Epic Antarctic Campaign & Sourcebook
Little by little they rose grimly into the western sky; allowing us to witness the various bare, bleak, and blackened summits . . . in the reddish Antarctic lights against the provocative background of iridescent ice-dust clouds. In the whole spectacle there was a persistent, pervasive hint of stupendous secrecy and potential revelation. . . . I could... [click here for more]

13 Titillating Tales
"...and I would have got away with it too if it hadn't been for you meddling investigators and your stupid dog!"—Frustrated Cultist upon arrest by local authorites.
Do you have gaming buddies coming over tonight and don't know what to wear, or more importantly what game you'll run? Blood Brothers to the rescue! We'll... [click here for more]

9 Glimpses of Horror"Ooh, those A-li-ens, A-li-ens On a weekend from Mars They liked our girls and our cars- Ooh, those A-li-ens, A-li-ens" —From the Blood Brothers 2 soundtrack.
They're B-movies, they're bad, and they're back for more laughs. Nine scenarios which have more to do with bad horror films than with H.P. Lovecraft. Microwave the popcorn,... [click here for more]

Horror Roleplaying in 1890s England
IN THE 1890s, Cthulhu and his minions share the globe with the mighty British Empire. But they owe allegiance to an empire of their own — a dark and cruel design on ownership of the world and on the dreams of humanity. Even among the green fields of rural England, only thoughtful and energetic intervention keeps the shadows at bay.
CTHULHU... [click here for more]

Ghastly Adventures & Erudite Lore
This book is composed of submissions to Different Worlds magazine and other Cthulhoid Chaosium projects. The Different Worlds readers’ enthusiasm for the Cthulhu Mythos resulted in many excellent submissions, some of which appear, with permission, within these pages.
The contents of this supplement are quite varied. The first two... [click here for more]

The Aeon of the Elder Party Has Arrived!
A 9th Level Beer and Pretzels Role-Playing Game.* Have you lost all hope in the future? Tired of Big Government? Sick of greedy, corrupt officials? You are not alone! Become one with the Elder Party! The greatest evil in the universe just sunk to new depths, and has announced his intention to enter politics. Don't settle for the lesser evil! Heed the... [click here for more]

CTHULHU NOW includes four roleplaying adventures, "The City in the Sea," The Killer Out of Space," The Evil Stars," and "Dreams Dark and Deadly." Background essays provide new skills and occupations, up-to-date cash-flow information, an elaborate firearms article (and a foldout illustrating contemporary firearms), active and passive night-vision equipment, a survey... [click here for more]

Horror Roleplaying in Ancient Rome
Here are new beasts and creatures for use with the Cthulhu Invictus setting of the Call of Cthulhu role-playing game.
THIS IS A DOWNLOADABLE PRODUCT. Two 8.5x11" pages. ... [click here for more]

Horror Roleplaying in Ancient Rome
Here are scenario seeds for use with the Cthulhu Invictus setting of the Call of Cthulhu role-playing game.
THIS IS A DOWNLOADABLE PRODUCT. One 8.5x11" page. ... [click here for more]

Horror Roleplaying in Ancient Rome
Notes on Roman Patronage for use with the Cthulhu Invictus setting of the Call of Cthulhu role-playing game.
THIS IS A DOWNLOADABLE PRODUCT. One 8.5x11" page. ... [click here for more]

Horror Roleplaying in Ancient Rome
Non-player characters for use with the Cthulhu Invictus setting of the Call of Cthulhu role-playing game.
THIS IS A DOWNLOADABLE PRODUCT. Two 8.5x11" pages. ... [click here for more]

Explore the occult in 1890s England. Particularly thorough background notes and unusual plots help keep the investigators on their toes. Streamlined investigator creation for the era: owning Gaslight is not necessary to use this book.
... [click here for more]

Fatal Experiments is a collection of three independent 1920's adventures for the Call of Cthulhu roleplaying game. Two of the three scenarios are suitable for both beginning and experienced players, making this book a perfect companion for first-time buyers of the Call of Cthulhu game system. The remaining adventure is unusually dangerous -- to be played only by experienced, follhardy... [click here for more]

Aircraft - Trains - Automobiles - Dirigibles - Diving Suits - Canal Boats - Armored Cars - Elephants - Siberian Sledges The golden age of travel occurred between 1880-1939. As traveling times shrank, destination became more important than journey, a notion now so conimon-sensical that we blink to think that the reverse was once truer. FEARFUL PASSAGES contains nine adventures set in... [click here for more]

The Second Cthulhu Companion
This second Call of Cthulhu companion answers questions common to Call of Cthulhu games, and reveals ancient linguistic traces of the dread Cthulhu cult among various cultures.
It then summarizes all Mythos spells printed in Shadows of Yog-Sothoth, The Asylum, the Cthulhu Companion, The Fungi From Yuggoth, Curse of the Chthonians, Trail of Tsathogghua,... [click here for more]

This dangerous investigation is set in Canada, in the 1920s.
The investigators meet the powerful Lavoie family of Montreal and learn what imperils them. They glimpse a strange cult that now thrives in Quebec and the ancient nemesis that guides it. They come to understand the horrible significance of a corpse discovered in the foundations of a former seminary. They at last perceive the true motives... [click here for more]

Unveiling the Legend-Haunted City
"Behind everything crouched the brooding, festering horror of the ancient town . . . the changeless, legend-haunted city of Arkham, with its clustering gambrel roofs that sway and sag over attics where witches hid from the King's men in the dark, olden days of the Province.It was always a very bad time in Arkham . . . ." ... [click here for more]

Roleplaying Beyond the Veil of Sleep
We all dream . . .
For some, dreams can become reality. H.P. Lovecraft's Dreamlands provides everything needed for Call of Cthulhu or Cthulhu Dark Ages investigators to travel down the seven hundred steps, through the Gates of Deeper Slumber, and into the realm of dreams. Includes a travelogue of the Dreamlands, a huge... [click here for more]

Return to the Forgotten Village
For classic Call of Cthulhu and d20 Cthulhu. Dunwich is a small village located along the Miskatonic, upriver from Arkham. Until 1806, Dunwich was a thriving community, boasting many mills and the powerful Whateley family.
Those among the Whateleys came to know dark secrets about the world, and they fell into the worship of unwholesome creatures from... [click here for more]

Three Scenarios for Call of CthulhuA disappearance. A plea for help. The strike of sudden madness.
Fear forms where shadows begin. The Cthulhu Mythos hovers at the edges of reason and sanity. With their courage and intelligence, investigators can dare the unknown and the unknowable, and roll back a little of the darkness.... [click here for more]

Hot Tips, Secret Info, & Sure-Fire Rules
Are there flashlights in the 1920s? How about flashbulbs? What can your licensed private-eye do? Can your investigators buy a machine gun?
Too often, Call of Cthulhu investigators find themselves not only baffled by the mysteries of the Mythos, but baffled as well by day-to-day life in America during the Roaring Twenties.
Discover... [click here for more]

Occupations & SkillsWhat, You Want To Live Forever?
Oh, just a little longer and a bit more pleasantly in the face of Mythos horrors. Let this book be your guide.
On becoming an investigator contains valuable tips that can help your investigator reach middle age, and possibly even those golden years. The Occupations Section contains 140 different possible 1920s... [click here for more]

The Essential Companion to the 5th edition of Call of CthulhuIncluded in this packet are these valuable play-aids of use to players and keepers:
A new "Lovecraft Country" Adventure, "The Little People" set in fabled Arkham, Massachusetts, was specially written for this package, and is suitable for both beginning... [click here for more]

That is not dead which can eternal lie, and with strange aeons even death may die.
—H.P. Lovecraft
Creatures, Gods, & Forbidden Knowledge
Here are those things which can “eternal lie”, and which have lived beyond human understanding for strange aeons. The Cthulhu Mythos is comprised of a complex and broad group of sometimes-contradictory entities, powers, and concepts... [click here for more]

Six Classic Explorations of the Unknown, the Deserted, and the Insane
IN DIM, FORGOTTEN RECESSES of the world lurk mind-twisting horrors. Through the use of human agents these horrors work to thwart mankind’s destiny.
However, not all of these human agents are willing partners. Many times have the monsters resorted to subtlety and intrigue to further their ends, rather than gross displays... [click here for more]

Perilous Adventures to Thwart the Dark God
At last the stars are almost right!
Soon Nyarlathotep's plans will come to fruition. Then the world will be changed irrevocably — but not quite yet. Pesky human investigators have learned much. Now they must survive long enough to make sense of what they know, and take resolute action. Masks of Nyarlathotep is a Lovecraftian... [click here for more]

A Handbook to the Pride of Arkham
MISKATONIC UNIVERSITY is a small, seemingly typical New England college nestled in the bosom of conservative Arkham, Massachusetts. A poor cousin to such hallowed institutions as Harvard, Brown, and Princeton (the term “Ivy League” won’t come into use until 1936), Miskatonic nonetheless offers coveted degrees in a wide variety of subjects... [click here for more]

The University Guidebook
The world sees Miskatonic University as a solid New England institution. Its professors and departments are on par with those of any Ivy League school—among the best in the nation.
Founded phsthumously in 1765 by seacaptain Jeremiah Orne, Miskatonic University grew from the acquired assets, and debts, of ailing Arkham College. Orne laid claim to the older 1690 institute... [click here for more]

WWI Mythos Action with the Lost Batallion
THE DATE IS OCTOBER 2, 1918. In France, soldiers huddle in hastily-dug trenches, faith their only protection against the never-ending artillery barrage. It is the time of World War I — the Great War — when mankind proves itself capable of atrocities never before conceived. As above, so below. Beneath the cracked and shattered soil of the Argonne... [click here for more]

LOS ANGELES IN THE 1920s was a fast-growing, fast-moving city that encompassed all that was great and all that was rotten in America. Racial, ethnic, and religious melting pots presaged what the whole country would become by the end of the century. L.A. nonetheless clung to a veneer of White Protestantism more in line with farm-belt states in the Midwest. The newly-rich built pleasure palaces... [click here for more]

We all hold a few dark, deep secrets close to their hearts. Some of our secrets are small and would seem unimportant if they were exposed to the light of day. Others are big and could change the world. This book is about secrets that have been allowed to fester and darken in the shadows. What was hidden in Robert Monroe-Tylor's coffin? What horror left Jason Andrews to die a sickening death? Why does... [click here for more]

Modern-Day Exploration of the Land of the Rising Sun
Japan is a contradictory nation of ancient traditions and modern high-tech free enterprise. Within its dark shadows and hidden places, Great Old Ones, Outer Gods, and their monstrous servitors lie in wait for the unwary. In the corporate boardrooms and political offices, secret societies carry out their sinister agendas. In hoary shrines and temples,... [click here for more]

The Mythos Roams Wild
AFRICA: Long known as the Dark Continent, Africa strikes fear in the hearts of civilized Westerners for its savage tribes, fierce animals, impenetrable jungles, vast deserts, lost civilizations, slave traders, contagious diseases — and the unknown.
Africa is “dark” because it is a mystery. It is the least understood, most dangerous, poorest, and least... [click here for more]

A 1920's Sourcebook to the Crescent City
NEW ORLEANS IN THE 1920s is a city of many faces. The gaiety of Mardi Gras is juxtaposed with the rampant corruption that earned New Orleans the nickname "The City That Care Forgot." The genteel decline of the French Quarter, the location of the city's original settlement, stands in contrast to the rich opulence of the Garden District, where the Americans... [click here for more]

A 1920s Sourcebook for the City by the Bay
In all of North America there is no more perfect intersection of climate, culture, and colorful history than San Francisco — the culmination of Manifest Destiny, the Golden Gate to the Pacific Ocean, and the treasure house of the wealth of the great California Gold Rush. Purged of her wild, anarchic past by a devastating earthquake and fire at the beginning... [click here for more]

TIBET is a common term used in the western world to refer to a remote plateau situated north of the Himalayan mountain range in Asia. A land of high-altitude peaks, some areas are impossible to reach without modern technology. The land is populated with malevolent gods and monsters, and deep secrets lie sleeping in ancient tombs and vaults among Tibet s soaring mountains and deep valleys.
Geologists... [click here for more]

A GLOBAL CAMPAIGN TO SAVE MANKIND!
The Silver Twilight is an international organization dedicated to the destruction of the human race. As brave Investigators, you must piece together passages from esoteric books, shards of ancient artifacts, and puzzling letters to discover the Silver Twilight's loathsome goals. This multi-chapter adventure begins in Boston and spans the globe. The Investigators... [click here for more]